到jpython2.5.3文件下，找到registry文件，将里面的内容这个部分修改

修改前：

# Setting this to a valid codec name will cause the console to use a
# different encoding when reading commands from the console.
#python.console.encoding = cp850

修改后：

# Setting this to a valid codec name will cause the console to use a
# different encoding when reading commands from the console.
python.console.encoding = cp850

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jpython LookupError: unknown encoding ‘ms936‘ 问题解决